Cita APA (7th ed.)

Sommerfeld, R. M., Anderson, H. M., & Brock, H. R. (1977). An introduction to taxation (1978 ed.). Harcourt Brace Jovanovich.

Cita Chicago (17th ed.)

Sommerfeld, Ray M., Hershel M. Anderson, i Horace R. Brock. An Introduction to Taxation. 1978 ed. New York: Harcourt Brace Jovanovich, 1977.

Cita MLA (8th ed.)

Sommerfeld, Ray M., et al. An Introduction to Taxation. 1978 ed. Harcourt Brace Jovanovich, 1977.